US 12,217,917 B2
Solid electrolytic capacitor with small equivalent series resistance and method for manufacturing the same
Masayuki Sakaguchi, Nagano (JP); Tetsushi Ogawara, Nagano (JP); Yoshishige Sakurai, Nagano (JP); Akira Iijima, Nagano (JP); and Yosuke Nozawa, Nagano (JP)
Assigned to RUBYCON CORPORATION, Nagano (JP)
Filed by RUBYCON CORPORATION, Nagano (JP)
Filed on Jan. 10, 2024, as Appl. No. 18/408,702.
Application 18/408,702 is a continuation of application No. 17/612,344, granted, now 11,908,632, previously published as PCT/JP2020/023923, filed on Jun. 18, 2020.
Claims priority of application No. 2019-117874 (JP), filed on Jun. 25, 2019.
Prior Publication US 2024/0145178 A1, May 2, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H01G 9/035 (2006.01); H01G 9/00 (2006.01); H01G 9/028 (2006.01); H01G 9/15 (2006.01)
CPC H01G 9/035 (2013.01) [H01G 9/0036 (2013.01); H01G 9/028 (2013.01); H01G 9/151 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A solid electrolytic capacitor comprising:
an anode foil having formed thereon an oxide film,
a cathode foil, and
a separator disposed between the anode foil and the cathode foil, and
being equipped with
a solid electrolyte formed of an electroconductive polymer compound in a fine particle form, and
a water-soluble compound solution introduced to surround the solid electrolyte,
the solid electrolyte contains diglycerin as a first water-soluble compound,
the water-soluble compound solution containing one kind or multiple kinds of polyethylene glycol, diethylene glycol or ethylene glycol as a glycol compound in a liquid form as a second water-soluble compound,
the second water-soluble compound having an average molecular weight of less than 400, and
the water-soluble compound solution contains water in an amount of 0.5 wt % or more.